Bottom-dumping hoisting-bucket.



A. N. DOUD.

BoTToM DUMPING HoIsTING BUGKBT.

APPLICATION FILED APB. 17, 190B.

954,266. Patented Apr. 5, 1910.

R SHEETS-SHEET 1.

JJ, y M55' annue" A. N. DOUD.

BoTToM DUMPING HOIS'HNG BUGKET.

APPLICATION FILED APB. 17, 1909. 954,266. Patented Apr. 5, 1910.

2 SHEETS-SHEET 2.

Strane? ARTHUR NATHAN DOD, 0F NORTH STOCKHOLM, NEW YORK.

BOTTOM-DUMPING HOISTING-BUGKET.

Specicatioii of Letters Patent.

Patented Apr. 5, 1910.

Application filed April 17, 1909. Serial No. 490,454.

To all whom 'it may concern:

Be it known that I, ARTHUR NATHiiN Donn, a citizen of the United States, residing at North Stockholm, in the countyy of St. Lawrence and State of New York, iave invented a new and useful Bottom-Dumping Hoistng-Bucket, of which the following is a specification. 4

This invention relates to a double door bottom dumping hoisting bucket, and `relates more particularly to an improved dooro erating mechanism having for its primary o ject the opening and closing of the doors simultaneously throu h the medium of the novel arrangement o operating levers and links, the construction being extremely simle and inexpensive to manufacture, reiable and eiiicient in use, and composed of comparativel few parts.

Another o ject of the invention is to so design the door-operating mechanism as to automatically lock the doors in closed position, and whereby slidably connected arts are eliminated, as such are extremely o jectionable, especially when the ,buckets are used in handling mortar, cement or the like, since the lodging of such on vthe sliding arts and hardening thereon prevents Ve cient operation.

With these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described ereinafter and set forth with particularity in the claims appended hereto.

In the accom anying drawi which illustrate one em odiment of the invention, Figures 1 and 2 are side views of the bucket showing the doors in open and closed" ositionsz res ectively. Fig. 3 is a vertica section of tl'ie bucket. Fig. 4 is an end view thereof partially broken away. Fig. 5 isa detail section view on l` e 5 5, Fi 3. Fig. 6 is a bottom plan view of one o the door sections.

Similar reference characters are employed to designate corresponding parts throughout the views. i

Referrin tothe drawings-A designates the bod o the; bucket, which may be. constructe of any suitable material and of any desired shape. In the resent instance, the bucket is composed ofp two parallel sheet metal side plates 1 and o ositely-slopin sheet metal end plates 2 which are connected capacityi is produced. The bottom is adapted to be closed' by swinging door sections 5 that are in the form of rectangular plates, reinforced by angle irons 5', adapted to fit Hush a ainst the bottom band or the lower edges o the `bucket lates to tightly close the bucket. Each oor section has a pair of L-shaped ears or hinge members G secured to their outer portions, and the upwardlyprojecting members of the ears are ivoted at 7 to brackets 8 fastened to the en plates of the bucket. The inner edges of the door sections are adapted to meet at the center of the bucket. Extending transversely across the top of the bucket is a sus ension bail 9 rigidly secured to the side p ates of the bucket by angle connecting ieces 10 riveted to the bucket and to the dpending extremities 11 of the bail.

The means for operating the door sections and for holding the saine in locked position comprise a swinging element composed of a. lever or a air of levers 12 connected by links 13 an 14 with the respective door sections at the ends thereof, each lever and its respective pairs of links forming toggle joints. In the present instance, a swinging element is shown composed of two connected levers which are disposed exterior to the buckets and fulcrumed on the side ,lates 1 thereof. It is to b e understood owev'er, that in some buckets of small parative y light and the load to be carried 1s small, a single lever will be siitlicient. The fulcrums of the levers are in the form of studs or pivots 13 each having a plate or head 14 at its inner end which is riveted to the adjacent side plate of the bucket, the said side plate, as shown in Fig. 5, having an a erture l-through which the stud passes.

e pivot studs are located both to one side of a medial plane passing through the bail 9, and the levers are provided with hubs 16 where the door sections are com-` to form a substantial bearing on the pivots, the levers bein held in place by cotter ins 17extendin t rough the pivots. The ong arms a of e levers are connected to ether by a." bar or' handle 18,soth`at both evers will operate simultaneously, and the said long arms are of snilicient length to swing iin over the to) and one end of the bucket in o ening an closin the door sections. The

s ortarm b of eac lever is connected with the up er extremities of both links 13 and 14, an the pivotal connections 19 and 20 are located at different distances from the axis of the pivot 13 so as to moveV in different arcs, as indicated by the dotted lines in Fig. I2. The pivot 19, which is connected with the link 13, is located at a greater radial distance from the pivot 13* than the rivot 20, so that as the levers 12 are oscillate the door sections will open symmetrically and simultaneously. The links 13 and 14 are connected with their respective door sections by pivots 21 and 22, and these pivot points are located e uidistant from the pintles 7 of the hinges or the door sections, and this being so and the fulcrums 13 being located at one side of the medial plane of the bucket, the crank arms of the levers connected with the links 13 and 14, must be of diil'erent lengths for the purpose of causing the door sections to open in absolute synchronism. If the pivot points 19 and 2O are the same distance from the fulcrum 13, it is necessary to vary the distance between the pintles of the hinges and the points of connection between the links and door secs tions.

Another important' feature is the automatic locking of the doors in closed position by limiting the downward inovement of the handle 18 to bring the levers at rest when the links will be on the dead centers, as shown in Fig. 1. It will be observed that the ivots between the ends of the links and the ever and door sections are located in lines passing through the center of the ful crum 13, Wlth t-he result that the door sections are locked in closed osition. The bucket will thus hold the loa Without danger of the door sections openin and yet it is comparatively eas to open t e door Sections by the manipu ation of the lever handle bar 18. The links 13 and 14 are suit` ably bent so es to accommodate themselves to the location of the fulcrum points 13. The opening movement of the door section is limited by stops 23 on the u per band of the bucket, said lstops being ocated in rthe path of the long arms of the levers.

When the bucket is closed, the door sections are in the position shown in Fig; 1, and they are locked in this position by the operating mechanism. The bucket can then receive its load to be transported to the desired point, and when it is desired to empty the bucket, it is merely nry to grasp the handle 18 whichbears againstthe u pstanding ears ofthe hinge members 6 Fig. 3 and throw the 'handle bar upwardly to stia uw pivot peine 19 and 2o but of dead center position to thereby unlock the door sections and permit the weight of the material in the bucket to throw them wide open to the position shown in Fig. 4. The open movement of the door sectlons is arrested by the levers striking the sto s 23. In closing the door sections, the hand e bar 18 is swun downwardly until it strikes the side of t e bucket or the stop 6. At this osition, the doors will be automatically ocked closed.

From the fore ing description, taken in connection with tig accompanying drawings the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the apparatus which I now consider to be the best embodiment thereof, I desire to have it understood that the a paratus shown is merely illustrative, and) that such changes may be made when desired as are within the scope of the claims appended hereto.

Havin thus described the invention, what I c aim as new, and desire to secure by y Letters-Pa tent, is

1. A bucket open at its top and bottom, door sections for the open bottom separately pivoted on the bucket to swing inwardly and outwardly to closed and open positions, a swinging lever element fulcrumed on the bucket, and links pivotally connected directly with the element and door sections at such points as to cause both door sections to open simultaneously and at the same rate,

the element being arranged to act through the links to pull the door sections as the clement mdves in one direction and to push the said sections as the element moves in the opposite direction in the use of the bucket.

2. A bucket havin door sections, a swinging lever element' fxcrumed on the bucket, and links pivotally connected with' the door sections and pivotally connected with the said element at diierent points at the same side of the fulcrum thereof.

3. A bucket having door sections, a pivoted element onthe bucket, separate links between the element and door sections for o ening and closing both the `latter by the e ement, pivotal connections between the links and door sections located at different points fromthe axis on which the sections swing, and pivotal connections between the links and said ivoted yelement located at dierent points m the axis of movement of the element, said element beingtilted in`- one direction to positively move y e. door sections to closed position and tiltable 1n the opposite direction for opening the door sections. Y

4. A bucket open at its bottom, door sections h'in'ged directly to the bucket to swing on fixed axes, 4links disposed at opposite sides of the bucket with their lower ends connected directly with the` ,door sections at points eccentric to their axes a swinging element consisting of connected levers ful'- crumed on the sides of the bucket and to which the upper ends of the links are se arately and directly connected, whereby t e levers operate through the links to positively open or close the door sections.

5. A bucket provided with oppositelyswinging door sections, fixed pivots on the bucket for the door sections, a Swingin element mounted on the bucket at one si e of the medial plane thereof, link members connected with the door sections and element, an actuator for the element, and means for limitin the movement of the actuator in opposite irections to hold the sections in open and closed osition.

6. A buc et havin oppositely-swinging door sections arran e to meet at the middle of the bucket, an e ement fulcrumed on the bucket, a pair of links separately connected with the element aiid each connected with a door section, an actuating member connected with the element, and means for limiting the movement of the member in one direction to throw the oints of connection between the links and e ement in dead center lines passing through the axis of movement of the element when the doors are in closed position.

7 A bucket open at its bottom, door sections hingedly connected to the ends of the bucket t0 swing upwardly and downwardly in .opposite directions to open osition, a swinging element fulcrumed on t e buckets links connected with the door sections and both separately and directly connected with a portion of the said element at one side of the fulcrum, the other portion of the said element being provided with a handle, and fixed abutments for limiting the movement of the element.

8. A bucket having an open bottom, outwardly-swinging door sections for closing the same and separately mounted on the bucket, the axis of rotation of the door seetions being fixed, a swinging element comprising levers fulcrumed at opposite sides of the bucket with their pivot points alinin and a handle bar connecting the correspon ing arms of the levers, an air of links at each side of the bucket havin their u per ends independently connecte with t e adjacent lever and their lower ends pivotally connected with the door sections to move the latter simultaneously to open or closed positions by the oscillation of the element.

9. A bucket having an open bottom, op-

g door sections meeting at the center of t e o en bottom when inA closed position an oscil atory element pivotally mounted on the bucket and consisting of spaced levers connected by a handle bar, a pair of links between each lever and the respective door sections, the axis on which the levers tilt being located at one side of the vertical plane in which the free edges of the buckets meet when in closed position, each lever and its pair of links forming toggle joints.

10. The combination of a bucket having an o en bottom, swinging door sections there or, a swinging element including a bell crank lever having a long and short arm, a fulcrum on the bucket for the element, links pivotally connected with the door sections, pivots connecting the links with the short arm of the element and located at different distances from the fulcrurn thereof, and means with which the long arm engages for arresting the movement of the element in one direction in closing the door sections to lock the latter in closed osition by throwing the said pivots in dea center lines passing through the said fulcrum and the points of pivotal connection between the lower ends of the links and door sections.

11. The combination of a bucket having an open bottom, oppositely-swingilng) door sections therefor, fixed pivots on t e ucket on which the door sections swing an oscillatory element mounted on the bucket, a air of links pvotally connected with the oor sections and pivotally connected with o posite sides of the element, and a hand e connected with the member for actuating the same.

12. A bucket having an open bottom, op-

positely swinging door sections meeting at the center of the open bottom when in closed osition, se arate and spaced pivots on the ucket for (Si posit/ely swin e door sections, a swinging ele ment including a lever pvoted on the side of the bucket and having long and short arms, a separate link pivotally connected to each door section at a point remote from the y pivot of the latter, and separate spaced pivots or connecting each link with the short arm of the lever.

In testimony, that I claim the foregoing as my own, I have hereto aliixed my signature in the presence of two witnesses.

ARTHUR NATHAN DOUD.

Witnesses Piiannm Ma'rnnws, MAGGIE Mn'rmiws. 

